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Method by which elemental sulfur is mined or extracted. Sulfur is melted with superheated water (at 170°C under high pressure) and forced to the surface of the earth as a slurry.

 

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Electron Deficient Compounds

Compounds that contain at least one atom (other than H) that shares fewer than eight electrons.

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Polarimeter

A device used to measure optical activity.

Mechanism

The sequence of steps by which reactants are converted into products.

Derivative

A compound that can be imagined to arise from a partent compound by replacement of one atom with another atom or group of atoms. Used extensively in orgainic chemistry to assist in identifying compounds.

Denatured

A commercial term used to describe ethanol that has been rendered unfit for human consumption because of the addition of harmful ingredients to make it sales tax-expempt.

 

Secondary Standard

A solution that has been titrated against a primary standard. A standard solution is a secondary standard.

 

Chemical Kinetics

The study of rates and mechanisms of chemical reactions and of the factors on which they depend.

Flux

A substance added to react with the charge, or a product of its reduction, in metallurgy, usually added to lower a melting point.

Hydrophilic Colloids

Colloidal particles that repel water molecules.